136 citations · 690 across the 10 of their papers we have counts for
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Hot Gas Lines in T Tauri Stars
David R. Ardila, Gregory J. Herczeg, Scott G. Gregory +20
For Classical T Tauri Stars (CTTSs), the resonance lines of N V, Si IV, and C IV, as well as the He II 1640 A line, act as diagnostics of the accretion process. Here we assemble a…
NUV Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission
Laura Ingleby, Nuria Calvet, Edwin Bergin +20
Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study. We presen…
Photoelectric cross-sections of gas and dust in protoplanetary disks
Thomas Bethell, Edwin Bergin
We provide simple polynomial fits to the X-ray photoelectric cross-sections (0.03 < E < 10keV) for mixtures of gas and dust found in protoplanetary disks. Using the solar elemental…
The propagation of Lyman-alpha in evolving protoplanetary disks
Thomas Bethell, Edwin Bergin
We study the role resonant scattering plays in the transport of Lyman-alpha photons in accreting protoplanetary disk systems subject to varying degrees of dust settling. While the…
Chemistry of a protoplanetary disk with grain settling and Lyman alpha radiation
Jeffrey K. J. Fogel, Thomas J. Bethell, Edwin A. Bergin +2
We present results from a model of the chemical evolution of protoplanetary disks. In our models we directly calculate the changing propagation and penetration of a high energy rad…